Blast-Pact Series Compact Ergonomic Blast Cabinet Owner’s Manual

SUPERIOR PERFORMANCE And Quality In Blast Cleaning Equipment

Ph: (780) 425-5510www.modublast.com Fax: (780) 425-5540Copyright© 2017 Mod-U-Blast®, All Rights Reserved

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CONTENTS1. IMPORTANT WARNING 2

2. NOTICE 3

3. SET UP 4

4. GENERAL OPERATING INSTRUCTIONS 5,6

5. AIR REQUIREMENTS 6

6. S SERIES: Suction cabinets 7

7. SUCTION CABINET MAINTENANCE 8,9

108. CSA CERTIFICATE OF COMPLIANCE

Upgrade kits and options are available to increase the production and efficiency of Mod-U-Blast cabinets.They include: safety doors, rubber lining, turn tables, track assemblies, tumble baskets, reclaimers, dustfilters and pressure conversion kits. Call your Mod-U-Blast dealer to find out more.This Owners Manual covers S Series industrial cabinets manufactured by Mod-U-Blast. The first letter(s)in your model number indicates which series your cabinet is from.

Mod-U-Blast manufactures a variety of blast cabinets for different production rates, medias, and budgetsfor your specific needs.

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1. IMPORTANT WARNINGRead all instructions before using this equipment. For efficient and safe production, reference OSHArequirements.

Remember:

1.1 Safety considerations:- Blast machine requires high pressure air to operate. This needs to be piped to the cabinet withappropriately sized and rated pipe.- Supply air should be dry and clean from oil and other contaminants. (ie use air dryer, coalescent filter,or moisture separator as needed.)- Blast machine must be grounded to avoid shock.- Electric extension cords should be three wire grounded, and rated for the amperage of the blaster.Check nameplate for rated amps.- Dust from blast cabinet should be collected in a dust collector or dry filter and not allowed to becomeconcentrated in areas where workers are exposed. This requires proper maintenance of dust collectionsystem.

1.2 Operator's responsibilities before starting:- Inspect fittings and hoses for damage and wear.- Check the seal on all doors. Only operate the blast cabinet with all doors securely closed and dustcollection system running.- Clean dust from dust collector and clean filter as needed.

1.3 Caution:- Watch for silicosis (from dust created when using silica sand as a blast media) or toxic dust hazard. DONOT USE MEDIA CONTAINING FREE SILICA.- Unless otherwise specified, working pressure of blast machine and related components must notexceed 125 psi- Keep blast nozzle controlled and aimed at the work.

1.4 Maintenance- Disconnect power and air supply from machine before servicing.- Keep your machine in good repair. Use Mod-U-Blast parts and do not substitute or modify Mod-U-Blastsupplied items.

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2. IMPORTANT NOTICETO DISTRIBUTORS, PURCHASERS AND END USERS OF MOD-U-BLAST PRODUCTS

The information provided described and illustrated in this material is intended for experienced,knowledgeable users of abrasive blasting equipment and supplies (products).

The products described in this material may be combined as determined solely by the user in a varietyof ways and purposes. However no representations are made as to intended use, performancestandards, engineering suitability, safe practices or compliance with government regulations and lawsthat apply to these products, products of others, or a combination of various products chosen by the useror others. It is the responsibility of the users of these products, products of third parties, and acombination of various products, to exercise caution and familiarize themselves with all applicable laws,government regulations and safety requirements.

Nor are representations made or intended as to the useful life, maintenance cycles, efficiency orperformance of the referenced products of any combination of products.

This material must not be used for estimating purposes. Production rates, labour performance or surfacefinishes are the sole responsibility of the user based on the user's expertise, experience and knowledgeof industry variables.

It is the responsibility of the user to insure that proper and comprehensive training of operators has beenperformed and all environmental and safety precautions observed.

Mod-U-Blast Inc. provides a variety of excellent products to the surface preparation industry, and we areconfident that all proficient users, operators and contractors in this industry will continue to use ourproducts in a safe and knowledgeable manner.

Before using this product, read all instructions, literature, labels, specifications and warningssent with and affixed to the unit. If operation of the unit is unclear after reading this manual, contactyour supervisor for instructions. It is the responsibility of the employer to read the following instructionsto users of this equipment, who are unable to read. Periodic inspection at the work site should be madeby supervisory personnel to ensure the blast machine is being properly used and maintained. A copy ofthis owner's manual must be kept with the blast machine and readily accessible to the blast machineoperators at all times.

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3. SET UP

3.1 Location: Before setting up your cabinet remember the following points:

Your Mod-U-Blast cabinet requires a compressed air supply and hose or pipe will need to be suppliedfrom the existing supply (air compressor) to the cabinet.

Your cabinet needs a power supply (usually 115 Volt, 60 Hz.)

All parts of your cabinet are designed to be used in a heated indoor location.

Dust can escape from the cabinet while loading and unloading the cabinet or while servicing the dustcollector.

Noise from the motor and blasting operation is not excessive but could disturb other processes or travelthrough light flooring.

3.2 Air: Supply air line should be sized according to the table shown on page 8. All hoses should be ratedat least 125 psi. An isolation valve should be installed at the end of the rigid pipe followed by a connectingcoupler or union. This allows the supply air to be turned off and then disconnected from blast machinefor servicing.

Your compressed air supply needs to be dry. Moisture in the air will cause problems. Other contaminantssuch as oil, will also cause decrease in production. Contact your Mod-U-Blast dealer if you are unsureof what is needed.

WARNING: DO NOT CONNECT TO HIGH PRESSURE BOTTLED GAS, RUPTURE AND EXPLOSIONCAN OCCUR.

3.3 Power Cords. Ensure any electrical cords used are rated for the voltage and amperage indicated onthe name plate.

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4. GENERAL OPERATING INSTRUCTIONS4.1 Preparing parts for blasting- All parts processed must be free of oil, grease and moisture. Make sure parts are dry before putting intothe cabinet for cleaning.

4.2 Air pressure- Set blasting pressure by adjusting knob on air regulator until gauge indicates desired pressure. (pull tounlock)- Operating pressure is usually from 50 to 80 psi. (pounds per square inch)- Higher pressures (up to 125) can be used but this breaks down some types of media prematurely.(ex.glass bead)-Set air pressure at 50-80 psi. Most parts for blast cleaning can be blasted at 80 psi. For light gauge steel,Aluminum, and other more delicate parts, start at lower pressure and gradually increase the pressure untilthe desired finish is achieved.

4.3 Filling with Media- For suction units with reclaimers, add enough to fill the bottom hopper on the reclaimer 2/3 full.- For pressure units, check the volume of the pot and add 3/4 of that volume initially. For these unitsmedia should not be piled above the top of the pot, into the reclaimer. This causes prematurewear of the pop-up

4.4 Nozzle angle and distance- Direct nozzle at parts at 45-60 degree angle with ricochet towards the back of the cabinet. Do not holdnozzle at 90 degree angle to parts being processed. This will cause the media blast to bounce back intothe blast stream and slow blasting action. Also 90 degree angle will cause excessive wear on nozzle andviewing window. Hold nozzle approximately 6 inches from parts being blasted.- Cabinets are available with safety doors so that the nozzle cannot be operated unless the doors areclosed. Contact your MOD-U-BLAST dealer for further information.

4.5 Media- Media should be of good quality and dry. Moisture will cause the media not to flow and will clog microvalve and hopper. NEVER USE SANDThere are many types and sizes of media for different finishes. If you are having a problem selecting amedia for a specific job, contact your distributor for recommendations.

4.6 Blasting-Turn on the electric switch, this will turn on the lights and the dust collector or the reclaimer. Using thegloves hold the gun and step on the foot pedal to start blasting.

WARNING: NOZZLE MUST ALWAYS BE POINTED AWAY FROM THE OPERATOR AND TOWARDSITEMS BEING PROCESSED. NEVER BLAST WITH ANY OF THE CABINET DOORS OPEN.

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5. AIR REQUIREMENTS at 80 psiOrifice Size CFM for suction gun CFM for pressure nozzle

No.2 18No.3 or 3.5* 15.0 40No.4 21.0 70No.5 31.9 115No.6 47.0 160No.7 62.0No.8 85.7

*Note: No. 3.5 air jet is used in suction guns, No. 3 nozzle is used in pressure nozzles

COMPRESSED AIR LINE PIPE SIZEin inches

VOLUME OF AIR IN CFMLINE 25 30 35 40 50 60 70 80 100 125LENGTH25' .75 .75 .75 .75 1 1 1 1.25 1.25 1.2550' .75 .75 .75 1 1 1 1 1.25 1.25 1.2575' .75 .75 1 1 1 1 1 1.25 1.25 1.25100' .75 .75 1 1 1 1 1.25 1.25 1.25 1.25150' .75 1 1 1 1 1.25 1.25 1.5 1.5 1.5200' 1 1 1 1 1 1.25 1.25 1.5 1.5 1.5250' 1 1 1 1 1 1.25 1.25 1.5 1.5 1.5300' 1 1 1 1 1 1.25 1.25 1.5 1.5 1.5

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6. S SERIES: Suction cabinets6.1 Gun - Suction cabinets use a venturi type gun to create a vacuum which pulls air and media from the storagearea up into the gun where it is propelled towards the work piece by the air stream. The size of the airjet is indicated on the nut. This is the size of the orifice in 1/32's of an inch. The corresponding nozzle sizeindicates the size of the nozzle bore in sixteenths of an inch (ex. #5 gun assembly will have a 5/32" airjet and a 5/16" nozzle). If these two parts don't match or are not adjusted correctly, the gun will not createthe required suction. Details on changing worn parts and adjustments are in section 6.

6.2 Nozzle Size- By changing to the next larger size of air jet and nozzle, production can increase significantly. Largersized nozzles produce a larger cleaning pattern. This, however, requires more air (your compressor mustbe able to provide this).

6.3 Metering Valve-The metering valve adjusts the amount of media being pulled into the venturi gun. This valve, locatedat the bottom of reclaimer, has the media stored on top of it (see page 15). When air is sent to the gunfrom the foot pedal a vacuum is created that sucks air and media up into the gun through the clear mediahose. A 7/16" bolt on the top of the metering valve can be adjusted to vary the amount of air that issucked in through the holes. If the holes are too far closed, the mixture will have too much media and thegun will pulsate. If the holes are too far opened, too little media will go to the gun and production willdecrease.

The difference between a pressure cabinet and a suction cabinet is in how the media is mixed with thepressurized air stream. The suction cabinets have an air jet which sucks the media up to the gun and themedia is mixed in just before it exits through the nozzle. Pressure cabinets mix the media in a grit valvethat is pressurized and then the pressurized mixture travels through the hose to the nozzle. This greatlyincreases the speed at which the media leaves the nozzle thus increasing production substantially.

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7. SUCTION MAINTENANCE INSTRUCTIONSThe most common problem customers have with their suction (venturi) blast cabinets is a decrease inproduction rates. A properly maintained suction cabinet should provide years of constant service.

7.1 Blasting Gun- After 10-12 hours of blasting time, the nozzle should be checked. If it shows uneven wear it should beturned 1/4 turn every 10 hours of use.- The nozzle will wear out eventually. Replace it if it measures 1/16" over its original size or if it showsuneven wear. - Adjustment: For mod-u-blast #5 or #6 guns, adjust the air jet so that three threads (approximately 5/16")shows behind the brass locking nut. For a #3.5 or 4, adjust the air jet all the way in. Adjust as needed fordifferent medias and conditions. A properly working mod-u-blast gun will pull 15-17 inches of mercury ona manometer.

- If the nozzle and air jet are not matched correctly the gun will not work (use a #5 nozzle with a #5 airjet). Size of air jet is stamped on the nut section. Size of nozzle is indicated on chart on page 9.

7.2 Caking of media- Media caking is caused by moisture in the air supply or from oily and greasy parts. If this is notcorrected media will not flow evenly and will plug up in the metering valve and the gun. Check air supply;if water is present install a good moisture trap. (Mod-u-blast dealers carry equipment to solve this). If oilyor greasy parts are being blasted, you should use degreaser and dry the parts first.-Reverse pressure: If media stops flowing occasionally, place thumb over nozzle (hold tight) and pushfoot pedal down for a few seconds. This will cause the system to back blast through the gun and up themedia hose. This will help loosen any clogs.

7.3 Air pressure drop- Set the air pressure to 80 psi on the air gauge at regulator. Push the foot pedal while holding gun andsee if the gauge pressure drops significantly (5-10 psi or more). If the pressure drops, this indicates thatthere is a restriction is the supply line. This could be hose that is too small, a reducer or quick coupler,a plugged filter, or other piping that doesn't allow enough air through. Clean filters and moistureseparators all the way back to the air compressor. Straighten any kinked lines. Use a master gauge tocheck the air pressure or replace existing gauge if you suspect it is giving you false readings. Air supplyline should be at least 1/2" or larger. Check chart on page 6.

7.4 Poor visibilityExcessive dust:

- Air inlet, 3 holes on door or top of cabinet, should be free to allow air into cabinet.- Dust collectors need to be cleaned and emptied regularly. (latch at bottom of dry filter, tray in dustcollector or dry filter, or zipper on bottom of bag).- Dust bags or cartridge contaminated (clean or replace filter in dust collector or filter bags). BAGS NEEDTO BE VIGOROUSLY SHAKEN EVERY HALF HOUR OF USE, DRY FILTERS AND DUSTCOLLECTORS HAVE MANUAL SHAKER HANDLES TO CLEAN THEM.

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7. SUCTION MAINTENANCE INSTRUCTIONS

- Recalimers clean media, but eventually the media breaks down and becomes so small that it isessentially dust. Replace media and clean dust collector.

Viewing window:Mod-u-blast windows come with a clear plastic protector on them. As these become pitted they can beeasily replaced to extend the life of the window. Order them through your dealer. The window can alsobe easily replaced as well. See pages 11,12 for details.

7.5 Poor media flow- Check for moisture as indicated above. Install moisture trap as needed, Replace damp media and cleanhoses and sump.- Holes in media hose will cause poor media delivery. Replace hose.- Debris in media. Replace or screen media.

AIR PRESSURE: As with the suction cabinets the blasting pressure is adjusted at the pressure regulatorat the front of the cabinet. Blasting can typically be accomplished at lower pressures with a pressurecabinet as compared to a suction cabinet. Glass bead at 80 psi in a suction cabinet is equivalent to 50or 60 psi in a pressure cabinet.

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